Results 51 to 60 of about 3,157,542 (333)
The Effect of Protoplanetary Disk Cooling Times on the Formation of Gas Giant Planets by Gravitational Instability [PDF]
, 2017 Observational evidence exists for the formation of gas giant planets on wide orbits around young stars by disk gravitational instability, but the roles of disk instability and core accretion for forming gas giants on shorter period orbits are less clear.
A. Boss
semanticscholar +1 more source
Revealing giant planet interiors beneath the cloudy veil
Nature Communications, 2020 Observations from the Juno and Cassini missions provide essential constraints on the internal structures and compositions of Jupiter and Saturn, resulting in profound revisions of our understanding of the interior and atmospheres of Gas Giant planets ...
Tristan Guillot, Leigh N. Fletcher
doaj +1 more source
Gas Disks to Gas Giants: Simulating the Birth of Planetary Systems [PDF]
AIP Conference Proceedings, 2008 The ensemble of now more than 250 discovered planetary systems displays a wide range of masses, orbits and, in multiple systems, dynamical interactions. These represent the end point of a complex sequence of events, wherein an entire protostellar disk converts itself into a small number of planetary bodies.
Edward W. Thommes +5 more
openaire +7 more sources
The Astrophysical Journal, 2023 Thanks to “dust-to-planet” simulations (DTPSs), which treat the collisional evolution directly from dust to giant-planet cores in a protoplanetary disk, we showed that giant-planet cores are formed in ≲10 au in several 10 ^5 yr, because porous pebbles ...
Hiroshi Kobayashi, Hidekazu Tanaka
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THE FORMATION MECHANISM OF GAS GIANTS ON WIDE ORBITS [PDF]
The Astrophysical Journal, 2009 The recent discoveries of massive planets on ultra-wide orbits of HR 8799 (Marois et al. 2008) and Fomalhaut (Kalas et al. 2008) present a new challenge for planet formation theorists. Our goal is to figure out which of three giant planet formation mechanisms--core accretion (with or without migration), scattering from the inner disk, or gravitational ...
Dodson-Robinson, Sarah E. +3 more
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Gas accretion onto a protoplanet and formation of a gas giant planet [PDF]
Monthly Notices of the Royal Astronomical Society, 2010 We investigate gas accretion onto a protoplanet, by considering the thermal effect of gas in three-dimensional hydrodynamical simulations, in which the wide region from a protoplanetary gas disk to a Jovian radius planet is resolved using the nested-grid method. We estimate the mass accretion rate and growth timescale of gas giant planets.
Tomoaki Matsumoto +3 more
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Petroleum Science, 2017 There are rich oil and gas resources in marine carbonate strata worldwide. Although most of the oil and gas reserves discovered so far are mainly distributed in Mesozoic, Cenozoic, and upper Paleozoic strata, oil and gas exploration in the Proterozoic ...
Xiao-Ping Liu +7 more
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EVIDENCE FOR THE DIRECT DETECTION OF THE THERMAL SPECTRUM OF THE NON-TRANSITING HOT GAS GIANT HD 88133 b [PDF]
, 2016 We target the thermal emission spectrum of the non-transiting gas giant HD 88133 b with high-resolution near-infrared spectroscopy, by treating the planet and its host star as a spectroscopic binary.
D. Piskorz +12 more
semanticscholar +1 more source
Melting and metallization of silica in the cores of gas giants, ice giants, and super Earths [PDF]
Physical Review B, 2015 The physical state and properties of silicates at conditions encountered in the cores of gas giants, ice giants and of Earth like exoplanets now discovered with masses up to several times the mass of the Earth remains mostly unknown. Here, we report on theoretical predictions of the properties of silica, SiO$_2$, up to 4 TPa and about 20,000K using ...
Taku Tsuchiya +5 more
openaire +5 more sources
STATISTICS OF LONG PERIOD GAS GIANT PLANETS IN KNOWN PLANETARY SYSTEMS [PDF]
, 2015 We conducted a Doppler survey at Keck combined with NIRC2 K-band adaptive optics (AO) imaging to search for massive, long-period companions to 123 known exoplanet systems with one or two planets detected using the radial velocity (RV) method.
M. Bryan +11 more
semanticscholar +1 more source